Control box, motor and pump

Abstract

The utility model relates to the technical field of motors, in particular to a control box, a motor and a pump, the control box comprises a shell, the shell is provided with an inner surface and an outer surface, the inner surface defines a containing cavity, and the outer surface is provided with a burning area; the driving plate is positioned in the accommodating cavity; the inner end of the electric connection component is connected to the burning port of the driving board, the outer end of the electric connection component is located in the burning area, and the outer end of the electric connection component is configured to be connected with a burner. Therefore, even under the condition that the shell is not opened, the burner can be used for being connected with the outer end of the electric connecting component, so that the burner is electrically connected with the driving board located in the shell through the electric connecting component, and programs stored in the driving board can be modified under the condition that the shell is not disassembled.

Description

Technical Field

[0001] The present disclosure relates to the technical field of motors, in particular to a control box, a motor, and a pump. Background Art

[0002] In order to control the rotational speed of a motor, a control box can be provided on the motor. Among them, a drive board (such as a PCBA) can be arranged inside the control box, and the rotational speed of the motor can be controlled through the program stored in the drive board.

[0003] When it is necessary to modify the program stored in the drive board, usually, the control box needs to be disassembled to expose the drive board, so that a programmer can be used to perform a programming operation on the programming port of the drive board. After the programming is completed, the control box needs to be reassembled.

[0004] However, the disassembly and assembly of the control box not only take time, but may also damage the drive board during the disassembly and assembly process. Summary of the Utility Model

[0005] The present disclosure provides a control box, a motor, and a pump, which can modify the program stored in the drive board without disassembling the control box.

[0006] In a first aspect, the present disclosure provides a control box, including a housing having an inner surface and an outer surface, the inner surface defining a receiving cavity, and the outer surface having a programming area; a drive board located in the receiving cavity; and an electrical connection component, an inner end of the electrical connection component being connected to a programming port of the drive board, and an outer end of the electrical connection component being located in the programming area, the outer end of the electrical connection component being configured to connect to a programmer.

[0007] In a second aspect, the present disclosure provides a motor, including a motor housing; a stator fixedly arranged inside the motor housing; a rotor coaxially arranged with the stator and rotatable relative to the stator; and the above-mentioned control box, the control box being mounted on the motor housing, and the drive board being electrically connected to the stator.

[0008] In a third aspect, the present disclosure provides a pump, including: a pump body and the above-mentioned motor, the motor being mounted on the pump body.

[0009] Compared with the prior art, the present disclosure at least includes the following beneficial effects:

[0010] The outer end of the electrical connection component is located in the programming area on the outer surface of the housing. Therefore, even without opening the housing, a programmer can be used to connect to the outer end of the electrical connection component, and thereby, through the electrical connection component, the programmer can be electrically connected to the drive board located inside the housing to modify the program stored in the drive board. Thus, when it is necessary to modify the program stored in the drive board, the control box provided by the present disclosure can avoid disassembly and reduce the time of the entire programming process. In addition, since disassembly is not required, damage to the drive board can be avoided. Description of the Drawings

[0011] Figure 1 A cross-sectional view of the pump provided by an embodiment of the present disclosure is shown.

[0012] Figure 2 An exploded view of the cover plate and the drive board provided by an embodiment of the present disclosure is shown.

[0013] Figure 3 A cross-sectional view of the cover plate and the drive board provided by an embodiment of the present disclosure is shown.

[0014] Figure 4 An exploded view of the cover plate and the covering component provided by an embodiment of the present disclosure is shown.

[0015] Reference Numerals:

[0016] 1, pump body; 11, impeller;

[0017] 2, motor; 21, motor housing; 22, stator; 23, rotor; 24, motor shaft;

[0018] 3, control box; 31, housing; 311, hollow base; 312, cover plate; 313, inner surface; 314, outer surface; 32, drive board; 321, programming port; 33, electrical connection component; 331, conductive pin; 34, accommodation cavity; 35, programming area; 36, display area;

[0019] 4, covering component; 41, hollowed-out. Detailed Description of the Embodiment

[0020] The technical solution of the present disclosure will be further described below in conjunction with the drawings and through specific embodiments. It can be understood that the specific embodiments described herein are only used to explain the present disclosure, rather than limiting the present disclosure. Additionally, it should be noted that for the convenience of description, only parts related to the present disclosure are shown in the drawings, rather than all of them.

[0021] Some orientation terms are defined in the present disclosure. Without contrary explanation, the orientation terms such as "upper", "lower", "left", "right", "inner", and "outer" are used for convenience of understanding and thus do not constitute a limitation on the protection scope of the present disclosure.

[0022] In this disclosure, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0023] In the description of this disclosure, unless otherwise clearly specified and defined, the terms "connected", "joined" and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this disclosure may be understood according to specific circumstances.

[0024] This disclosure illustrates the technical solutions involved by taking a pump as an example. It can be understood that the same or similar technical solutions can also be applied to other scenarios that require controlling the motor speed, such as compressors.

[0025] Figure 1 A cross-sectional view of the pump provided by this disclosure is shown. As Figure 1 shown, the pump (such as a centrifugal pump, especially a canned motor pump) includes a pump body 1 and a motor 2 installed on the pump body 1. The motor 2 is used to drive the pump body 1 to move, for example, it can drive the impeller 11 in the pump body 1 to rotate. The rotational speed of the motor 2 determines the rotational speed of the impeller 11. Therefore, the rotational speed of the motor 2 is related to the operating state of the pump, and by adjusting the rotational speed of the motor 2, the operating point of the pump can be adjusted accordingly.

[0026] As Figure 1 shown, for a pump whose operating point can be controlled, a control box 3 is usually provided on the motor 2. A drive board 32 (such as a PCBA) is provided in the control box 3, and a program is stored in the drive board 32. The motor 2 can operate according to the program. The position of the control box 3 is not limited and can be set at one end of the motor 2 axially away from the pump body 1 as shown in Figure 1 or can be set on the radial surface of the motor 2.

[0027] It should be noted that this disclosure does not involve the improvement of the program itself. The program can be a program known in the prior art that can control the rotation of the motor 2.

[0028] As shown Figure 1 in FIG. 1, the motor 2 includes a motor housing 21, a stator 22 fixedly disposed within the motor housing 21, and a rotor 23 coaxially disposed with the stator 22 and rotatable relative to the stator 22. The drive plate 32 is electrically connected to the stator 22 to control the stator 22 to generate a rotating magnetic field. By changing the rotating magnetic field, the rotational speed of the rotor 23 can be changed. The rotor 23 is fixedly connected to the motor shaft 24, and the impeller 11 is fixed to one end of the motor shaft 24. Thus, when the rotational speed of the rotor 23 changes, the rotational speed of the impeller 11 changes accordingly.

[0029] When the operating point of the pump changes, the rotational speed of the motor 2 can be adjusted accordingly according to the program to match the operating point of the pump. For example, when the head required by the pump increases, the rotational speed of the motor 2 can be increased.

[0030] In addition, the rotational speed of the motor 2 can also be changed by one or more buttons (not shown) on the control box 3. For example, the rotational speed of the motor 2 can be switched from one gear to another gear, thereby changing the rotational speed of the impeller 11 and further affecting the operating point of the pump.

[0031] As shown Figure 1 in FIG. 2, the control box 3 includes a housing 31. The housing 31 can be mounted to the motor housing 21. For example, it can be mounted to the motor housing 21 using fasteners (such as bolts). The housing 31 has a hollow interior structure, and thus has an inner surface 313 and an outer surface 314. Among them, the outer surface 314 can generally be directly observed from the outside of the housing 31, and the inner surface 313 generally cannot be directly observed from the outside of the housing 31. For example, it is necessary to disassemble the housing 31 to observe it.

[0032] As shown Figure 1 in FIG. 3, the inner surface 313 defines a receiving cavity 34 inside the housing 31, and the position where the inner surface 313 is located is the boundary of the receiving cavity 34. The shape of the receiving cavity 34 is not limited. Exemplarily, the shape of the receiving cavity 34 can be a cuboid, a cylinder, etc.

[0033] As shown Figure 1 in FIG. 4, the drive plate 32 is located within the receiving cavity 34, that is, the drive plate 32 is located inside the housing 31. The drive plate 32 is separated from the external environment by the wall of the housing 31 to protect the drive plate 32. For example, it can prevent dust in the external environment from falling on the drive plate 32. Another example is that it can prevent objects in the external environment from directly colliding with the drive plate 32 and damaging the drive plate 32.

[0034] Figure 2 FIG. 5 shows an exploded view of the cover plate 312 and the drive plate 32 provided by the present disclosure. As shown Figure 2As shown, the outer surface 314 has one or more programming areas 35, and the one or more programming areas 35 are all connected to one or more programming ports 321 of the driving board 32. The programming ports 321 can be one or more contacts on the surface of the driving board 32. The contacts can protrude from the surface of the driving board 32 or recess into the interior of the driving board 32. Programs can be written into the interior of the driving board 32 through the programming ports 321. In the present disclosure, one example is given for both the programming area 35 and the programming port 321.

[0035] As Figure 2 shown, the control box 3 further includes an electrical connection component 33. The electrical connection component 33 includes an inner end, an outer end, and an intermediate portion connecting the inner end and the outer end. Among them, the inner end is connected to the programming port 321 of the driving board 32, the outer end is located in the programming area 35, and the intermediate portion penetrates through the wall of the housing 31. Thus, with the help of the electrical connection component 33, the programming port 321 on the driving board 32 can be connected to the programming area 35.

[0036] Therefore, when it is necessary to modify the program stored in the driving board 32, a programmer (not shown) can be connected to the outer end of the electrical connection component 33 to modify the program in the driving board 32. That is to say, the programmer can be connected to the driving board 32 without disassembling the housing 31.

[0037] According to the control box 3 of the present disclosure, during the programming process, the disassembly and assembly of the control box 3 can be avoided, improving the convenience and efficiency of programming. In addition, damage to the driving board 32 during the disassembly and assembly process is also avoided.

[0038] In the present disclosure, the position close to the accommodation cavity 34 is the inner side, and the position far from the accommodation cavity 34 is the outer side. For example, the surface of the housing 31 close to the accommodation cavity 34 is the inner surface 313, and the surface far from the accommodation cavity 34 is the outer surface 314. Another example is that the end of the electrical connection component 33 close to the accommodation cavity 34 is the inner end, and the end far from the accommodation cavity 34 is the outer end.

[0039] As Figure 1 shown, the housing 31 includes a hollow base 311 and a cover plate 312. The hollow base 311 can be installed on the motor housing 21. The hollow base 311 has a chamber and an opening communicating with the chamber. The cover plate 312 is provided on the opening to enclose the chamber to form the accommodation cavity 34.

[0040] The surface of the hollow base 311 facing the chamber or the accommodation cavity 34 is the inner surface, and the surface far from the chamber or the accommodation cavity 34 is the outer surface.

[0041] The surface of the cover plate 312 facing the chamber or the accommodation cavity 34 is the inner surface, and the surface far from the chamber or the accommodation cavity 34 is the outer surface.

[0042] The outer surface 314 of the housing 31 includes the outer surface of the hollow base 311 and the outer surface of the cover plate 312, and the inner surface 313 of the housing 31 includes the inner surface of the hollow base 311 and the inner surface of the cover plate 312.

[0043] There are no restrictions on the shapes and materials of the housing 31, the hollow base 311, and the cover plate 312, and they can be selected according to actual needs.

[0044] In the present disclosure, since the program in the drive board 32 can be modified without disassembling the housing 31, the cover plate 312 and the hollow housing can be fixedly connected and non-detachable.

[0045] In addition, similar to the housing 31 in the prior art, the hollow base 311 and the cover plate 312 can be detachably connected. In the present disclosure, an example is given where the cover plate 312 and the hollow housing are detachably connected.

[0046] For example, threaded holes can be provided on the hollow housing, through holes corresponding to the threaded holes can be provided on the cover plate 312, and screws can be threaded into the threaded holes after passing through the through holes, thereby mounting the cover plate 312 on the hollow base 311.

[0047] In addition to assembling the cover plate 312 and the hollow housing through fasteners such as screws, common connection methods such as snap connection can also be used to achieve detachable connection.

[0048] The programming area 35 can be located on the outer surface of the hollow base 311 or on the outer surface of the cover plate 312. Correspondingly, the electrical connection component 33 can be located on the hollow base 311 or on the cover plate 312.

[0049] Figure 3 A cross-sectional view of the cover plate 312 and the drive board 32 provided by the present disclosure is shown. As Figure 3 shown, the electrical connection component 33 includes a plurality of conductive pins 331. The inner ends of the conductive pins 331 are in contact with the programming port 321, the outer ends of the conductive pins 331 are located in the programming area 35, and the middle portions of the conductive pins 331 are provided on the cover plate 312.

[0050] In this embodiment, an example is given where the middle portions of the conductive pins 331 are provided on the cover plate 312. However, in an embodiment not shown, the middle portions of the conductive pins 331 can be provided on the hollow base 311.

[0051] In addition, the shape of the conductive pins 331 is not limited, and it can be linear, or zigzag, curved, etc.

[0052] The electrical connection component 33 can be fixed on the cover plate 312 by injection molding or riveting to prevent relative movement between the electrical connection component 33 and the cover plate 312, which helps ensure that when the cover plate 312 is installed on the hollow base 311, the inner end of the electrical connection component 33 is always connected to the programming port 321.

[0053] It should be noted that this embodiment does not exclude the electrical connection component 33 from being detachably installed on the cover plate 312.

[0054] Figure 4 An exploded view of the cover plate 312 and the covering component 4 provided by the present disclosure is shown. As Figure 4 shown, in order to prevent the external environment from affecting the outer end of the electrical connection component 33, a covering component 4 can be provided outside the programming area 35 to shield the outer end of the electrical connection component 33, thereby preventing dust from falling on the outer end of the electrical connection component 33 and also preventing direct collision between an object in the external environment and the outer end of the electrical connection component 33.

[0055] As an example, the covering component 4 can be a mylar sheet, so that when it is necessary to remove the mylar sheet, the mylar sheet can be torn off.

[0056] In addition, the cover plate 312 usually has a display area 36, which can display, for example, the operating status of the motor 2 or the pump, such as the speed gear, the motor control mode, etc. The motor control mode can include internal control controlled by the drive board 32 and external control controlled by an external controller.

[0057] The display area 36 can also be located on the hollow base 311.

[0058] The display area 36 and the programming area 35 can both be located on the hollow base 311, or both be located on the cover plate 312, or can be respectively located on the hollow base 311 and the cover plate 312.

[0059] As Figure 4 shown, the covering component 4 can have a hollow 41 reserved corresponding to the display area 36, so that when the covering component 4 is installed on the cover plate 312, the display area 36 will not be covered.

[0060] The above is the description of the embodiments of the present disclosure. Through the above description of the disclosed embodiments, those skilled in the art can implement or use the present disclosure. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A control box, characterized in that: The control box (3) comprises: A housing (31), the housing (31) having an inner surface (313) and an outer surface (314), the inner surface (313) defining a receiving cavity (34), and the outer surface (314) having a burning area (35); a driving plate (32), the driving plate (32) being located in the accommodating cavity (34); and An electrical connection component (33), the inner end of the electrical connection component (33) is connected to the burning port (321) of the driving board (32), the outer end of the electrical connection component (33) is located in the burning area (35), and the outer end of the electrical connection component (33) is configured to be connected to a burner.

2. The control box according to claim 1, characterized in that: The housing (31) comprises: a hollow base (311), the hollow base (311) having a chamber and an opening communicating with the chamber; and A cover plate (312) is arranged on the opening to close the chamber to form the accommodating cavity (34).

3. The control box according to claim 2, characterized in that: The cover plate (312) is detachably connected to the hollow base (311), and the burning area (35) is located on the outer surface (314) of the cover plate (312).

4. The control box according to claim 3, characterized in that: The electrical connection component (33) has a middle portion connected between the inner end and the outer end, and the middle portion is fixed to the cover plate (312).

5. The control box according to claim 4, characterized in that: The middle part is fixed on the cover plate (312) by injection molding or riveting.

6. The control box according to any one of claims 1 to 5, characterized in that: The control box (3) also includes: A covering component (4) is detachably arranged outside the burning area (35) to cover the outer end of the electrical connection component (33).

7. The control box according to claim 6, characterized in that: The covering component (4) comprises a Mylar sheet.

8. The control box according to any one of claims 1 to 5, characterized in that: The electrical connection component (33) comprises a plurality of conductive pins (331), the inner ends of the conductive pins (331) are in contact with the burning port (321), the outer ends of the conductive pins (331) are located in the burning area (35), and the middle parts of the conductive pins (331) are inserted into the housing (31).

9. A motor, characterized in that The motor (2) comprises: Motor housing (21); A stator (22), wherein the stator (22) is fixedly arranged inside the motor housing (21); a rotor (23), the rotor (23) being coaxially arranged with the stator (22) and rotatable relative to the stator (22); and According to the control box (3) according to any one of claims 1 to 8, the control box (3) is mounted on the motor housing (21), and the drive plate (32) is electrically connected to the stator (22).

10. A pump, characterized in that The pump comprises: A pump body (1); and According to the motor (2) of claim 9, the motor (2) is mounted on the pump body (1).

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